ERIC Number: ED433689
Record Type: Non-Journal
Publication Date: 1996-Aug
Reference Count: N/A
Measured Field Performance and Energy Savings of Occupancy Sensors: Three Case Studies.
Floyd, David B.; Parker, Danny S.; Sherwin, John R.
A study determined the performance levels, energy savings, and occupant acceptance of occupancy sensors that were installed in a Florida small office building and two elementary schools. Performance data was collected in 15-minute intervals. Aggregate time-of-day lighting load profiles were compared before and after the installation and throughout the commissioning period when the sensors were tuned for optimum performance. Data reveal a 10 percent savings in energy usage in one of the two schools where sensors were installed in classrooms, the cafeteria, and administrative offices. Improper sensor installation, set-up, and faulty user operation inhibited energy performance in the other school. Also, sensor malfunctions adversely affected the energy savings in the office building; following their corrections, energy savings improvements were noted. All three case studies suggest that occupancy sensors can provide savings in a variety of building types. However, it is noted that savings will greatly vary due to occupancy patterns, and previous method of control and lighting load. It was determined that savings and user acceptance for areas selected for control by occupancy sensors are influenced by proper sensor selection, location, and controls commissioning. (Contains 19 references, 5 figures, and 1 table.) (GR)
Descriptors: Comparative Analysis, Cost Effectiveness, Elementary Education, Elementary Schools, Energy Management, Public Schools
Florida Solar Energy Center, 1679 Clearlake Rd., Cocoa, FL 32922-5703.
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: Florida Solar Energy Center, Cape Canaveral.
Identifiers - Location: Florida